My jee main percentile 62.3606. How much should I get in board exams to get merit seat in engineering colleges..

Hey
Boards exam are not added up in your results these are the just criteria that take admission
And it :
Minimum 75%marks ( for general / obc)
And 65 %for ST/ SC in 12 th boards along with other criteria of year of passing.
And 62.3606 means nearly 37 percent students score more than you ( if nearly 8 lakhs give exam your rank will be nearly 3 lakh.
With this rank it will be very difficult to get admission .
And you have only option to choose some private college or to give entrance of other colleges .
So you should work for your 2 nd attempt ( April exam).
Good luck